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(No Moclel.) 3 SheetsSheet 1.

G. B. STERLING.

v SIGNALING SYSTEM.

No. 593,314. Patented Nov. 9, 97.

l WITNESSES: INVENTQR (N0 Model.) I 3 Sheets-Sheet 2. C. B. STERLING SIGNALING SYSTEM.

No. 593,314. Patented Nov. 9,1897.

WITNESSES: HI yZ/WJZW/M.

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(No Model.) 3 Sheets-Sheet 3.

O. B. STERLING.

SIGNALING SYSTEM.

No. 593,314. Patented Nov. 9,1897.

TNESSES: lNVEN OR Tn: mums PEYEHS o0. nuerau'ma, WASHINGTON, a c.

UNITED STATES PATENT OFFICE.

CHARLES E. STERLING, OF NEW YORK, N. Y.

SIGNALING SYSTEM.

SPECIFICATION forming part of Letters Patent No. 593,314, dated November 9, 1897. Application filed February 25,1897. Serial No. 624,935. (No model.)

' To alt whom it may concern.-

Be it known that I, CHARLES B. STERLING, a citizen of the United States, residing at New York city, in the county and State of New York, have invented .certain new and useful Improvements in Signaling Systems, of which the following is a full and accurate description, reference being had to the accompanying drawings, forming part of this specification.

' The object of my invention is to so connect a plurality of electromagnets for sounding alarms at a number of points distant from each otheras in the various rooms of a hotel or widely-separated points of a railway system, &c.with each other and with the generator that a single circuit maker and breaker,

operated by one of said magnets shall serve to automatically make and break the circuits through all of said magnets, to cause all of the alarms to be sounded a number of times upon the closing of a circuit by hand, and

also to provide the system with a number of widely-scattered circuit-closers the operation of any of which will close the circuits through one or all of the magnets in the system and through the aforesaid circuit maker and breaker.

In all embodiments of my invention it is es sential that there shall be an electromagnet, of any suitable form,which automatically controls a circuit making and breaking device for making and breaking the circuit through all of the electromagnets in the system.

In the accompanying drawings, Figure 1 shows my invention embodied in a car alarm system. Fig. 2 shows the invention embodied in a system for starting cars. fire-alarm installation for factories.

A is a solenoid.

B is the vertically-movable core.

0 is a spring-operated catch carried by the lower end of the core.

D is a wheel having pins upon one of its faces and teeth upon its periphery.

E is the weighted lever for controlling the timing of the strokes of the core.

F indicates the spring for holding the circuit maker and breaker in its upper position.

Fig. 3'shows a' G is the rod for carrying the maker and breaker.

I and J are the contacts, which are bridged by H.

' For a complete and detailed description of the construction and operation of the parts just above enumerated I refer to United States 7 alarms under the platforms may consist of coils R R, inside of the bells S S. If the right-hand bell is to be sounded, the motorman will put his foot. upon the pin X, operating the lever W and throwing the bridging-contact Y into engagement with the contacts U U. The current will then flow through M N, coil A, conductors O L, contact J, bridge H, contact I, conductors S, K,- and P, coil R of bell, conductor T, contacts U U, bridge Y, and conductor-V to the rail. It is unnecessary for the motorman to repeatedly strike the treadle. He merely holds it in depressed position. The core B is suddenly drawn up into the coil A to the full limit of its upward stroke, the latch O slipping past the pins on wheel D. Near the end of its upward stroke the core (into which the rod G loosely fits, as explained in my former patent) lifts the rod G and moves the bridge H out of engagement, as shown, with the contacts I and J, the springs F holding the circuit maker and breaker in elevated position. The circuit having been broken at I and J, the core is released, and in falling has to overcome the retarding effect of the wheel D and spring F. The spring-latch on its downward movement strikes a pin on the wheel D and is held stationary until the weighted lever E is operated. Then the weight of the falling core drives other suitable form of magnet or circuit" tacts B maker may be used, if desired; also, any other form of magnet for theplatform-alarms. The mechanism for timing the strokes may also be quite difierent from that herein described.

I desire it to be understood that the foregoing statements as to Variations in structure also apply to all embodiments of my invention.

In Fig. 2 I show one embodiment of my invention which may be used for starting trains from different sections of a railway depot or yard. S are the gongs placed at the different sections. 'One of said gongs is shown ininverted position to illustrate the relations of coil, core, and gong. A and B are electriclighting wires. 0 and D are branches therefrom to the fuse-block E. F is a switch. G" is the conductor which leads from the switch directly to the wire H. Short conductors I" connect H with all the bells, and conductors J connect the bells with contacts K. Switches L, cor-responding in number to-contacts K", are pivoted to the metallic bar M". Conductor- Z' connects said bar withthe wire K, leading to the circuit maker and breaker.

' The switch- F being closed the current flows from A" over D wires M and N, coil A, wires 0 and K, contacts I and J, and bridge H, and i This causes an inwires L, P, and C to B. termittent operation of the circuit maker and breaker. If the operator wishes to sound any one of the gongs, he operates the switch L which corresponds to that gong. The current is then branched over wires G H" and the wires I leading-to said gong, then by wire J,

contact K, switch L, bar M5, and wire Z to the circuit maker and breaker. I'Ie counts the strokes of the circuit maker and breaker,

and thus learns the number-of sounds given by The switches the alarm thrown into circuit. Y L" may be operated in any order desired. If preferred, the switch F may be kept open normally, being closed only when a switch L is to be operated.

In order that they maybe protected from mishandling, 850., the magnet A, circuitmaker, wheel D, &zc-., may be put into a case, as indicated.

In Fig. 3 I have shown a fire-alarm system which embodies my invention. Twogongs S are placed on the floors of the building, (four floors are shown in Fig. 3,) and there are 1 by a push-button H three push-buttons D on each floor. When a fire is discovered, a workman pushes any one of the buttons D and a battery-circuit is closed. This circuit is over wire D wire D", wire D wire D wire E battery E wire E binding-post H wire E through coil of magnet E wire D wire D wire D and wire D The magnet E attracts its armature F which is held away from the magnet by a spring F The free end of the armature carries a bridging-contact F which closes the alarm-circuits across the two con The current then flows from the lighting-wire. B, over wire B over contacts B and bridge F over wires P and L, contact 'J, circuit maker and breaker H, contact I, and wire J. There the current divides, part flowing directly over wire 0, coil A, wire N, and wire M to lighting-wire A. The rest of the current flowsover wire P Z, over wire C 1 over wire 0 wire 0 through the coils of the bells S, wires C and wires 0 to wire A. Thus all the bells are thrown into circuit by the simple pressure of apush-button atv any point in the factory.

In order that the bells may continue to be sounded after the workman has released the push-button and as long as desired, I provide a latch G which is pulled by a latch G into a position underneath the free end of the armature F holding it permanently in its elevated and circuit-closing position. An electromagnet- G is provided for restoring the latch G to its normal position, breaking the I signaling-circuits at the bridge F. This magnet G is included in a battery-circuit closed The current flows over wire H wire H through coil G wire H,

' binding-post E wire E battery E wire E,

and wire H The magnets A, E and G are preferably placed within a casing, as indicated.

Instead of push-buttons D on the floors, fusible or other thermostatic circuit-closers may be substituted.

My invention may be embodied in other forms than those herein described.

I do not of course wish to be understood as confining myself to the details herein shown,

which may be departed from and still be my invention.

What I claim is 1. In a signaling system, supply-conductors, a circuit-closer an electromagnet and an automaticallyoperating circuit maker and breaker controlled by said magnet, all included in the supply-circuit, and a branch breaker and a plurality of alarms, in combination with means for moving the circuitcloser into position, a lock or latch for hold."- ing itin said position, and means for freeing the same, substantially as and for the pnrpose described.

2. a signaling system, supply-conduccircuit including said circuit maker and I0 cuit-elosers for closing a circuit through the eleetromagnet, and means for moving the lock or latch to release the first-named circuit--.

closer, substantially as and for the purpose described.

In Witness whereof I have hereunto signed I 5 my name this 20th day of February, 1897. CHARLES B. STERLING. In presence of- J NO. P. DAVISON, W. H. BERRIGAN, Jr. 

